<template>
  <div>
    <header class="header">
      <!-- 头部的第一行 -->
      <div class="top">
        <div class="container">
          <div class="loginList">
            <p>尚品汇欢迎您！</p>
            <p v-if="!userName">
              <span>请</span>
              <!-- 声明式导航：务必要有to属性 -->
              <router-link to="/login">登录</router-link>
              <router-link to="/register" class="register">免费注册</router-link>
            </p>
            <p v-else>
              <a>{{ userName }}</a>
              <a class="register" @click="logout">退出登录</a>
            </p>
          </div>
          <div class="typeList">
            <router-link to="/center/myorder">我的订单</router-link>
            <router-link to="/shopcart">我的购物车</router-link>
            <a href="###">我的尚品汇</a>
            <a href="###">尚品汇会员</a>
            <a href="###">企业采购</a>
            <a href="###">关注尚品汇</a>
            <a href="###">合作招商</a>
            <a href="###">商家后台</a>
          </div>
        </div>
      </div>
      <!--头部第二行 搜索区域-->
      <div class="bottom">
        <h1 class="logoArea">
          <router-link class="logo" to="/home">
            <img src="./images/logo.png" alt="" />
          </router-link>
        </h1>
        <div class="searchArea">
          <form action="###" class="searchForm">
            <input type="text" v-model="keyword" ref="autocomplete" class="input-error input-xxlarge" />
            <button class="sui-btn btn-xlarge btn-danger" type="button" @click="goSearch">搜索</button>
          </form>
        </div>
      </div>
    </header>
  </div>
</template>
<script>
export default {
  name: 'Header',
  data() {
    return {
      keyword: '',
    }
  },
  methods: {
    // 搜索按钮的回调函数，向search路由进行跳转
    goSearch() {
      // 路由穿参
      // 1、字符串
      // this.$router.push('/search/' + this.keywords + '?keywords=' + this.keywords)
      // 2、模板字符串
      // this.$router.push(`/search/${this.keywords}?keywords=${this.keywords}`)
      // 3、对象（常用）

      let locations = {
        name: 'search',
        params: {
          keyword: this.keyword || undefined,
        },
      }
      if (this.$route.query.categoryName) {
        locations.query = this.$route.query
      }
      this.$router.push(locations)
      // location.query = this.$route.query
      // this.$router.push(location)
      // this.$router.push({
      //   name: 'search',
      //   params: {
      //     keyword: this.keyword || undefined,
      //   },
      //   query: this.$route.query,
      // })

      //  1:路由传递参数（对象写法）path是否可以结合params参数一起使用?
      //  2:如何指定params参数可传可不传?
      //  3:params参数可以传递也可以不传递，但是如果传递是空串，如何解决？
      // this.$router.push({
      //   name: 'search',
      //   params: {
      //     keywords: '' || undefined,
      //   },
      //   query: {
      //     keywords: '',
      //   },
      // })
    },
    // tuichu
    async logout() {
      // 发请求通知 服务器 要退出
      // 清除项目当中的数据
      try {
        await this.$store.dispatch('userLogout')
        this.$router.push('/home')
      } catch (error) {
        alert(error.message)
      }
    },
  },
  mounted() {
    // 通过全局事件总线清除关键字
    this.$bus.$on('clear', () => {
      this.keyword = ''
    })
  },
  beforeDestroy() {
    this.$bus.$off('clear')
  },
  computed: {
    userName() {
      return this.$store.state.user.userInfo.name
    },
  },
}
</script>
<style lang="less" scoped>
.header {
  & > .top {
    background-color: #eaeaea;
    height: 30px;
    line-height: 30px;

    .container {
      width: 1200px;
      margin: 0 auto;
      overflow: hidden;

      .loginList {
        float: left;

        p {
          float: left;
          margin-right: 10px;

          .register {
            border-left: 1px solid #b3aeae;
            padding: 0 5px;
            margin-left: 5px;
          }
        }
      }

      .typeList {
        float: right;

        a {
          padding: 0 10px;

          & + a {
            border-left: 1px solid #b3aeae;
          }
        }
      }
    }
  }

  & > .bottom {
    width: 1200px;
    margin: 0 auto;
    overflow: hidden;

    .logoArea {
      float: left;

      .logo {
        img {
          width: 175px;
          margin: 25px 45px;
        }
      }
    }

    .searchArea {
      float: right;
      margin-top: 35px;

      .searchForm {
        overflow: hidden;

        input {
          box-sizing: border-box;
          width: 490px;
          height: 32px;
          padding: 0px 4px;
          border: 2px solid #ea4a36;
          float: left;

          &:focus {
            outline: none;
          }
        }

        button {
          height: 32px;
          width: 68px;
          background-color: #ea4a36;
          border: none;
          color: #fff;
          float: left;
          cursor: pointer;

          &:focus {
            outline: none;
          }
        }
      }
    }
  }
}
</style>
